[jbosscache-issues] [JBoss JIRA] Updated: (JBCACHE-1076) REPL_SYNC only waits for the majority of responses (not all)

[Manik Surtani (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBCACHE-1076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manik Surtani updated JBCACHE-1076:
-----------------------------------

    Fix Version/s: 3.2.0
                       (was: 3.0.0.GA)
         Priority: Minor  (was: Major)


I see this as an edge case since it could lead to data inconsistencies anyway (same as async repl) but with none of the perf advantages.  

> REPL_SYNC only waits for the majority of responses (not all)
> ------------------------------------------------------------
>
>                 Key: JBCACHE-1076
>                 URL: https://jira.jboss.org/jira/browse/JBCACHE-1076
>             Project: JBoss Cache
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>            Reporter: Bela Ban
>            Assignee: Manik Surtani
>            Priority: Minor
>             Fix For: 3.2.0
>
>
> By default, synchronous replication has to wait for *all* acks (whereas asynchronous repl waits for none). We should be able to define a config option, where we only wait for a majority of responses. For example, if we have a cluster of 10 nodes, and we don't want to wait for 10 acks, we could define that all sync method calls return after having received 6 acks.
> Advantage: if we have 1-2 slow nodes in the above example, and have to wait for all replies, we are slowed down by a minority.

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